<html>
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
</head>
<body>
	<p>点击按钮，测试带有 break 语句的循环。</p>
    <button onclick="myFunction()">点击这里</button>
    <p id="demo"></p>
    <script type="text/javascript">
    	function myFunction(){
    		var x="",i=0;
    		for(i=0;i<10;i++){
    			if(i==3) break;
    		x=x+"The number is"+i+"<br>";
    		}
    	document.getElementById('demo').innerHTML=x;
    	}
    		
    </script>
</body>
</html>